Lambda the Ultimate

inactiveTopic Writing dirty R5RS macros
started 4/5/2002; 2:20:16 AM - last post 4/5/2002; 2:20:16 AM
Ehud Lamm - Writing dirty R5RS macros  blueArrow
4/5/2002; 2:20:16 AM (reads: 1986, responses: 0)
Writing dirty R5RS macros
Over on comp.lang.scheme:

we will write macros that do the things that the R5RS macro system has sought to prevent. This article will also show how to 're-define' a lambda form while still keeping the original 'lambda' available. The redefined lambda acts as if it was infected by a virus, which propagates through the lambda's body infecting other lambdas in turn. Although we will be re-defining all binding forms, we will preserve the semantics of Scheme as given in R5RS.

Are Scheme macros too restrictive or are they too expressive? Interesting demonstration, whatever your opinion.

Posted to functional by Ehud Lamm on 4/5/02; 2:22:06 AM